/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.activiti.rest.service.api.runtime.process;

import org.activiti.engine.runtime.Execution;
import org.activiti.rest.service.api.RestResponseFactory;
import org.activiti.rest.service.api.engine.variable.RestVariable;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.List;


/**
 * @author Frederik Heremans
 */
@RestController
public class ExecutionVariableCollectionResource extends BaseVariableCollectionResource {

    @RequestMapping(value = "/runtime/executions/{executionId}/variables", method = RequestMethod.GET, produces = "application/json")
    public List<RestVariable> getVariables(@PathVariable String executionId,
                                           @RequestParam(value = "scope", required = false) String scope, HttpServletRequest request) {

        Execution execution = getExecutionFromRequest(executionId);
        return processVariables(execution, scope, RestResponseFactory.VARIABLE_EXECUTION);
    }

    @RequestMapping(value = "/runtime/executions/{executionId}/variables", method = RequestMethod.PUT, produces = "application/json")
    public Object createOrUpdateExecutionVariable(@PathVariable String executionId,
                                                  HttpServletRequest request, HttpServletResponse response) {

        Execution execution = getExecutionFromRequest(executionId);
        return createExecutionVariable(execution, true, RestResponseFactory.VARIABLE_EXECUTION, request, response);
    }


    @RequestMapping(value = "/runtime/executions/{executionId}/variables", method = RequestMethod.POST, produces = "application/json")
    public Object createExecutionVariable(@PathVariable String executionId,
                                          HttpServletRequest request, HttpServletResponse response) {

        Execution execution = getExecutionFromRequest(executionId);
        return createExecutionVariable(execution, false, RestResponseFactory.VARIABLE_EXECUTION, request, response);
    }

    @RequestMapping(value = "/runtime/executions/{executionId}/variables", method = RequestMethod.DELETE)
    public void deleteLocalVariables(@PathVariable String executionId, HttpServletResponse response) {
        Execution execution = getExecutionFromRequest(executionId);
        deleteAllLocalVariables(execution, response);
    }

}
